焦炭塔冷却过程中残余应力产生原因及数值分析

Formation Reasons and Numerical Analysis of the Residual Stress in Cooling Process of Coke Tower

由于焦炭塔是在冷热循环的条件下工作的,所以在焦炭塔冷却的过程中产生的残余应力对塔体的变形也产生很大的影响,对此进行了理论上的解释说明和数值分析。由计算结果得知,导致焦炭塔腰鼓变形的主要因素是焦炭塔筒体周向残余应力过大,产生较大的塑性变形。

Because the coke tower works in thermal cycle conditions, the residual stress caused by cooling process of the coke tower has great influence to the tower cylinder deformation. In this article, theoretical explanation and numerical analysis of the residual stress were carried out. The calculating results show that the main factor of the coke tower deformation is that the circumferential residual stress of the coke tower cylinder is too big, which can make the coke tower cylinder produce a large plastic deformation.